EL847

Overview

The EL847 is a 16-pin DIP phototransistor optocoupler manufactured by Everlight Electronics Co Ltd. It integrates four independent channels, providing high-density signal isolation in a compact package. The device features a current transfer ratio (CTR) ranging from 50% to 600% at an input forward current of 5mA and collector-emitter voltage of 5V. It supports a maximum operating temperature of 110°C and offers a high isolation voltage of 5000 Vrms between input and output circuits.

Feature Summary

• Integrates four independent phototransistor channels within a single 16-pin dual in-line package for space-efficient circuit design.
• Provides high electrical isolation capability with a rated isolation voltage of 5000 Vrms between input and output sides.
• Delivers a wide current transfer ratio range to accommodate various logic interface requirements.

Applications

• Multi-channel digital signal isolation in industrial control systems
• Isolation interfaces for microprocessor-based communication buses
• Signal coupling in multi-channel data acquisition modules

Procurement Notes

Verify the specific CTR binning requirement during procurement, as the datasheet specifies a wide range of 50% to 600%. Confirm that the 16-pin DIP package aligns with the target PCB footprint. Ensure the selected variant meets the required isolation voltage standards for the intended safety application.

Selection Notes

Select this component when multiple isolated channels are required in a limited board area. The 16-pin DIP format facilitates through-hole mounting. Consider the CTR variation across the specified range when designing biasing networks for consistent switching performance across different units.

Part Context

This component belongs to the EL847 series of multi-channel optocouplers produced by Everlight Electronics. It serves as a high-density alternative to discrete isolation components, consolidating four channels into one standard package to simplify assembly and reduce overall system volume.

Replacement Considerations

Cross-reference with other 16-pin quad-channel phototransistor optocouplers. Verify pinout compatibility and isolation voltage ratings before substitution. Check if alternative manufacturers offer equivalent CTR specifications and thermal characteristics.